Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chao vu cac snippets" » "chao vu code snippets", "chao xu cac snippets", "chao chu cac snippets", "chao van cac snippets", "chao va cac snippets", "chao tu cac snippets", "chao ve cac snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chao vu cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chao vu cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chao vu cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chao vu cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.